2015-01-012024-05-16https://scholars.lib.ntu.edu.tw/handle/123456789/668375摘要：東南亞地區的熱帶島嶼是全球生物多樣性最豐富的區域，亦是最近數十年來人為開發造成地景植被改變最劇烈的地區之一。熱帶地區對流活動的頻率與強度對島嶼生態系與人類農業、經濟活動有直接的影響，另一方面，當對流通過熱帶島嶼時，島嶼的地形、陸面過程與人為土地利用都可能影響雲的結構與降水變化，進而造成對流活動的改變（如圖一），當中仍有許多值得深入分析且尚待解答的反饋機制與跨領域科學議題。在各種時間尺度的熱帶對流活動中，30-60天週期的季內變化（Madden-Julian Oscillation, MJO）是近年來全球氣象與氣候學界的焦點議題之一，關鍵在於提升對此現象的科學知識與數值模擬能力，對氣象預報、氣候模擬與全球水循環的瞭解均會帶來極重要的助益。本計畫預計綜合分析多種衛星觀測資料，並運用最先進的全球雲解析氣候模式，來瞭解熱帶島嶼地形與土地利用改變對季內尺度與日夜變化對流活動的影響機制。本研究整合國內在氣候動力、陸面過程、濕對流、雲微物理、氣候模擬與衛星遙測等領域的專家共同參與合作，不但是國內首度使用全球雲解析模式為工具來探討熱帶對流與陸地之間的複雜交互作用，也可獲得以衛星資料分析結果來建構數值模擬實驗設計的寶貴經驗，有助於國內在氣候與地球系統模擬的跨領域研究發展，並增進國內在「熱帶對流與複雜地形交互作用」此一國際重要科研議題的研究實力。<br> Abstract: The main goal of this project is to advance the scientific understandings to the intraseasonal and diurnal variability of the tropical convection, including the influences from several important and yet under-explored processes related to the topography and land use changes of the tropical islands. The intraseasonal variability of tropical convection is one of the key research topics in weather and climate sciences in recent years, and we aim to investigate it from the new perspectives of the multi-sensor satellite observations, as well as from the idealized numerical simulations of the high-resolution global cloud-resolving model, SPCAM (Super-Parameterized Community Atmosphere Model). This project will initiate and consolidate the collaboration among experts of climate dynamics, land processes, moist convection, cloud microphysics and satellite remote sensing to form an interdisciplinary research team on Earth System Sciences.This will be the first study using the state-of-the-art global model, SPCAM, to examine the coupled interactions between topography, land use changes, and convection in Taiwan’s climate research community. The results will advance the scientific understandings to tropical convection, from the perspective of the multi-sensor satellite observations, as well as from the idealized simulations of the global cloud-resolving model. Understanding the mechanisms of these hydrological cycle interactions and feedbacks will help improve model representation of water and energy fluxes on diurnal to intraseasonal time scales.熱帶對流土地利用變遷氣候模擬島嶼地形tropical convectionland use changeclimate simulationisland topography